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Re: LF: More 8.97kHz WSPR decodes - changed PC here

from [Andy Talbot] [Permanent Link][Original]
To: [email protected]
Subject: Re: LF: More 8.97kHz WSPR decodes - changed PC here
From: Andy Talbot <[email protected]>
Date: Wed, 27 Apr 2011 15:52:21 +0100
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Check your sampling rate on the machine that's failing.  Although most modern soundcards are based around 48kHz older ones are 44.1kHz based, and give errors when interpolating to 12kHz based rates.     Alternatively teh Windows driver that does teh work can'r cope
 
Andy


 
On 27 April 2011 15:19, Roger Lapthorn <[email protected]> wrote:
As an experiment I changed over to my wife's laptop and got immediate decodes of G6ALB's VLF earth mode signal (3km) at -17dB S/N, suggesting the issue with lack of decodes may be with my soundcard and not Andrew's.

1408 -17 -0.6   0.008986  0 G6ALB JO02 47
1410 -17 -0.6   0.008986  0 G6ALB JO02 47
1412 -17 -1.2   0.008986  0 G6ALB JO02 47
1414 -17 -0.8   0.008986  0 G6ALB JO02 47
1416 -17 -0.8   0.008986  0 G6ALB JO02 47

This is a very solid signal on the 80m square single turn vertical wire loop antenna. Andrew is using 44W to an earth electrode antenna.

73s
Roger G3XBM

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